We use a capital letter ...
1). for the personal pronoun "I"
"I want to go to the park."
2). for countries, languages & nationalities, and religions.
China - Chinese
France - French
Egypt - Egyptian
Canada - Canadian
3). for days of the week, months of the year, holidays.
Monday, Tuesday, Wednesday, Thursday, Friday, Saturday,
Sunday
Halloween, Christmas, New Year's, Thanksgiving, Canada Day.
4). for people's names and titles
William Shakespeare, Prof. Smith, Dr. Smith, David Smith,
5). for company and organization names
Pepsi, Coca Cola, Hyundai, Toyota,
the Alberta Health Services, ASSIST Community Services Centre, ATCO, Citizenship and Immigration Canada ( CIC ),
the Red Cross, Apple, Microsoft Corp. the United Nations
6). for places
Edmonton, London, Paris, Beijing, Hong Kong, Cairo, the North Pole, Alberta, Asia, the Middle East,
Oxford St. Fifth Ave.
Source from EnglishClub (https://www.englishclub.com/writing/caps0.htm)
1). for the personal pronoun "I"
"I want to go to the park."
2). for countries, languages & nationalities, and religions.
China - Chinese
France - French
Egypt - Egyptian
Canada - Canadian
3). for days of the week, months of the year, holidays.
Monday, Tuesday, Wednesday, Thursday, Friday, Saturday,
Sunday
Halloween, Christmas, New Year's, Thanksgiving, Canada Day.
4). for people's names and titles
William Shakespeare, Prof. Smith, Dr. Smith, David Smith,
5). for company and organization names
Pepsi, Coca Cola, Hyundai, Toyota,
the Alberta Health Services, ASSIST Community Services Centre, ATCO, Citizenship and Immigration Canada ( CIC ),
the Red Cross, Apple, Microsoft Corp. the United Nations
6). for places
Edmonton, London, Paris, Beijing, Hong Kong, Cairo, the North Pole, Alberta, Asia, the Middle East,
Oxford St. Fifth Ave.
Source from EnglishClub (https://www.englishclub.com/writing/caps0.htm)